Improvement in pump-pistons



UNITED STATES PATENT OFFICEe i BENJAMIN F. BIGGS, OF LA FAYET'IE, INDIANA.

IMPROVEMENT IN PUMP-PISTONS.

Specification forming part of Letters latent No. 147,890, dated February 24, 1874; application filed i January 28, 1874.

To all whom it may concern:

Be it known that I, BENJAMIN F. Brees, of La Fayette, Indiana, have invented certain new and useful Improvements in Pump-Pistons, of which the following is a specification, reference being had to the accompanying drawings.

rEhe invention relates to the pistou of a sucker or pump rod; and consists in providing the side of the piston with an angular aperture, upon` the upward-inclining 'portion of which, and whereat terminates the bore of the piston, is placed a valve of leather or other suitable material, secured so as to work over the upper vent or mouth of the bore, and provided on its upper surface with a valve-block. A iiaring annular ring, of leather or other proper substance, is secured about the piston, below the valve, its inner circumference coming in proper juxtaposition to the valve-block, so that, as the piston descends and the valve is thrown open, the block may strike against the annular ring, and thus prevent the valve or block striking the cylinder in which the piston operates.

The object of the invention is to provide a convenient and efficient means of elevating water and liuids.

Figure lis a longitudinal vertical section of a device embodying my invention. Fig. 2 is an exterior view, showing certain parts.

A, in the accompanying drawings, is the piston of a pump-rod, provided, as shown, with the aperture or notch B, penetrating to about its vertical axis. The upper face of the notch B inclines downward and inward, the lower ,upward and inward, the bore D of the piston terminating on the latter face, upon which, between the outer edge of the bore D and the surface of the piston, is secured one edge of the valve E, which extends over the bore, and is provided on its upper surface with the valveblock F, the upper part of which is properly curved toward the hinge of the valve. At a suitable distance below the notch B is provided the annular shoulder H, upon which is placed the lower edge of the leather ring I, and affixed to the piston A, the shoulder H being of such height that, when thel leather is in place, its lower exterior surface shall be about iiush with the adjacent parts of the piston. The ring I iiares upward and outward, extending upward a suitable distance to receive the blows of the valve-block F when the valve is thrown violently open. The piston is provided with the proper axial aperture L to receive the pump-rod.

The piston A, being inserted in the pumpcylinder with its bore D below', is forced downward, the ringI operating as a guide or packing. Then the piston comes in contact with the fluid it descends through it, the valve E opening. The movement of the piston now being reversed, the valve closes, and the rin g I filling the space between the piston and the pump-cylinder, the water is carried upward. The water may be elevatcdby the repeated movement of the piston, which exhausts the air belowit, and causes the water to rise until it iiows through the valve E. The ring I serves the double purpose of assisting in the elevation of the water and preventing the valve-block F striking violently against the inner surface of the pump-cylinder.

Vhat I claim as my invention, anddesire to secure by Letters Patent, is

The piston A, provided with the valve E, having upon it the valve-block F,in combination with the. dared annular leather rin g I, arranged to receive the blow of the valve, sub stantially as shown and described.

In testimony that I claim the foregoing improvement in pump-pistons, as above de-4 scribed, I have hereunto set inyhand and seal.

BENJAMIN F. BIGGS. iL. s] Vitnesses:

W. T. SEvERsoN,

JOHN S. MILLER. 

